From LimeSurvey Manual
E-mail is an important segment of the LimeSurvey program. It is used to make contact with participants by sending out invitations, reminders, confirmations and reminders, among other types.
The main portion of the communication process is handled by opening your survey, and by selecting, from the second toolbar, Survey properties > Email templates. There you will find the separate tabs for each type of e-mal one might wish to send as associated with the selected survey.
LimeSurvey offers a few provided templates between which you may choose. To choose from them, one simply looks at the compose window toolbars and selects the right-most icon on the lower bar that reads "Templates" when you hover over it with your mouse. You will be given another window from which to pick